I believe those axles in that C- body 8.75 are non- tapered axles, meaning they can be cut down to any length you need and then resplined. May or may not be a cost effective way to go.
That was my understanding as well. I’m trying to find someone local who does it, shipping plus the cost of having them resplined puts the cost similar to new strange axles from Dr.Diff, which come with new studs and green bearings.